The Auxiliary Water Supply System (AWSS, though often referred to on manhole covers and hydrants as HPFS for High Pressure Fire System) is a high pressure water supply network built for the city of San Francisco in response to the failure of the existing emergency water system during the 1906 earthquake. The majority of damages to the city from the earthquake were caused not by the seismic event itself, but from the fires that ensued, resulting in the destruction of 80% of the city's property value at the time. [1] The improved water system was originally proposed by San Francisco Fire Department chief engineer Dennis T. Sullivan in 1903, with construction beginning in 1909 and finishing in 1913. The system is made up of a collection of water reservoirs, pump stations, cisterns, suction connections and fireboats. While the system can use both fresh or salt water, it is preferential to not use salt water, as it commonly causes galvanic corrosion in fire equipment. [2]
The large, white oversized hydrants that are supplied by the AWSS/HPFS, of which there are 1889, [3] are visible throughout the city. The hydrants have painted tops that are color-coded as to zone:
The Twin Peaks Reservoir acts as the backbone of the AWSS system and is located in San Francisco's Twin Peaks hilltop. It is made up of a 10.5-million-U.S.-gallon (40-million-liter) storage reservoir made out of 6-inch-thick (150 mm) reinforced-concrete slabs. Fresh water is delivered from the city's domestic water system by two 750-US-gallon-per-minute (2,800 L/min) centrifugal pumps. For safety, the reservoir is broken up into two tanks, and each tank can be emptied separately so that in case of a pipe breakage only half of the reservoir is lost. [4] [5] The tank is set at 758 feet (231 m). [6]
The Ashbury tank has a direct connection to the Twin Peaks reservoir and has a total capacity of 500,000 US gallons (1,900,000 L). The tank is set at 494 feet (151 m) and, when combined with the Jones street tank, can provide hydrants with 214-psi pressures. It is located at 1234 Clayton Street, [7] in the city's Ashbury Heights neighborhood.
The Jones Street tank has a direct connection to the Ashbury tank and has a total capacity of 750,000 US gallons (2,800,000 L). The tank is set at 369 feet (112 m), providing hydrants with 160-psi pressures. It is located at 1239 Jones Street in the city's Nob Hill neighborhood. [7]
There are two emergency pumping stations present within the AWSS.
Both stations are capable of pumping 10,000 US gallons per minute (38,000 L/min) of salt water at a pressure of 300 pounds per square inch (2,100 kPa) with on-site generators. Pumping Station No. 2 is listed on the National Register of Historic Places.
To supplement any failure of the pumping stations or reservoirs, the city’s two fireboats can be utilized to deliver salt water into the system. They can also be used to deliver water by hose line to areas close to the water.
As a final measure to counter a failure of the AWSS piping, the city maintains network of 177 independent underground water cisterns. [8] Sizes vary from 75,000 US gallons (280,000 L) to over 200,000 US gallons (760,000 L) depending on location with a total storage capacity of over 11 million U.S. gallons (42 million liters) of water. [3] These cisterns are easily spotted at street level with manholes labeled CISTERN S.F.F.D surrounded by red brick circles or rectangles.
A water tower is an elevated structure supporting a water tank constructed at a height sufficient to pressurize a distribution system for potable water, and to provide emergency storage for fire protection. Water towers often operate in conjunction with underground or surface service reservoirs, which store treated water close to where it will be used. Other types of water towers may only store raw (non-potable) water for fire protection or industrial purposes, and may not necessarily be connected to a public water supply.
A fire engine or fire truck is a vehicle, usually a specially-designed or modified truck, that functions as a firefighting apparatus. The primary purposes of a fire engine include transporting firefighters and water to an incident as well as carrying equipment for firefighting operations in a fire drill. Some fire engines have specialized functions, such as wildfire suppression and aircraft rescue and firefighting, and may also carry equipment for technical rescue.
A fire hydrant, fireplug, firecock (archaic), hydrant riser or Johnny Pump is a connection point by which firefighters can tap into a water supply. It is a component of active fire protection. Underground fire hydrants have been used in Europe and Asia since at least the 18th century. Above-ground pillar-type hydrants are a 19th-century invention.
The Massachusetts Water Resources Authority (MWRA) is a public authority in the Commonwealth of Massachusetts that provides wholesale drinking water and sewage services to 3.1 million people in sixty-one municipalities and more than 5,500 large industrial users in the eastern and central parts of the state, primarily in the Boston area.
A fireboat or fire-float is a specialized watercraft with pumps and nozzles designed for fighting shoreline and shipboard fires. The first fireboats, dating to the late 18th century, were tugboats, retrofitted with firefighting equipment. Older designs derived from tugboats and modern fireboats more closely resembling seafaring ships can both be found in service today. Some departments would give their multi-purpose craft the title of "fireboat" also.
A cistern is a waterproof receptacle for holding liquids, usually water. Cisterns are often built to catch and store rainwater. To prevent leakage, the interior of the cistern is often lined with hydraulic plaster.
A draft is the use of suction to move a liquid such as water from a vessel or body of water below the intake of a suction pump. A rural fire department or farmer might draft water from a pond as the first step in moving the water elsewhere. A suction pump creates a partial vacuum and the atmospheric pressure on the water's surface forces the water into the pump, usually via a rigid pipe or a semi-rigid hard suction hose.
This is a glossary of firefighting equipment.
Toronto Water is the municipal division of the City of Toronto under Infrastructure and Development Services responsible for the water supply network, and stormwater and wastewater management in Toronto, Ontario, Canada, as well as parts of Peel and York Regions.
A combination of aqueducts, reservoirs, and tunnels supplies fresh water to New York City. With three major water systems stretching up to 125 miles (201 km) away from the city, its water supply system is one of the most extensive municipal water systems in the world.
The Erie Water Works was incorporated in 1865 as the Erie Water and Gas Company to provide drinking water and fire hydrant water for the city of Erie, Pennsylvania. The Water Works, also known as the Erie City Water Authority, replaced the Erie Water Systems. Its board of commissioners operates independently of the city government.
Highbridge Reservoir was a reservoir in the New York City water supply system, which received water from a portion of the Croton Aqueduct system. It was located on Amsterdam Avenue between 172nd Street and 174th Street, in Upper Manhattan adjacent to the High Bridge Water Tower and the High Bridge across the Harlem River Valley. The reservoir covered about 7 acres (28,000 m2), was 16 feet (4.9 m) deep, and had a total capacity of 10,794,000 US gallons (40,860,000 L).
The Davenport Water Co. Pumping Station No. 2, also known as the Ripley Street Pumping Station No. 2, is a historic building located in central Davenport, Iowa, United States. It was listed on the National Register of Historic Places in 1984. The facility was originally built in 1884 to address problems with the city's water system, and had a reservoir that could hold 5 million US gallons of water. The building was subsequently replaced in 1986 by a smaller plain structure on the same property facing West 14th Street. Despite being replaced, the station remains an important part of Davenport's history, as it was an essential component of the city's water system and contributed to the growth of its residential areas above the bluff line from 1880 to 1920.
Phoenix is a fireboat owned by State of California and operated by the city of San Francisco in the San Francisco Bay since 1955. Phoenix is known for helping to save Marina District buildings from further destruction by fire following the 1989 Loma Prieta earthquake. Her worthy assistance resulted in a second vintage fireboat obtained for the city. Both Guardian and Phoenix are based at Firehouse No. 35 at Pier 22½ of the Port of San Francisco. Phoenix often leads parades of ships, and takes part in welcoming ceremonies.
The Evansville Standpipe is a historic water tower located in Evansville, Wisconsin. The 80-ft tall steel tower was built in 1901 by the Chicago Bridge & Iron Company, as part of the development of the local water supply system, spurred on by a devastating fire in 1896 that destroyed a large section of downtown Evansville. It was added to the National Register of Historic Places in 2008.
Liverpool's Hydraulic Power Company were the operators of a public hydraulic power network supplying energy across the city of Liverpool, England, via a system of high-pressure water pipes from two pumping stations. The system was the third public system to be built in England, opening in 1888. It expanded rapidly, but gradually declined as electric power become more readily available. The pumping station was converted to electric operation in 1960, but the system was turned off in 1971. One of the pump sets was salvaged and presented to the Liverpool Museum.
The City of Beloit Waterworks and Pump Station was built in 1885 in Beloit, Wisconsin just below a hill on top of which sits the Beloit Water Tower. It was added to the National Register of Historic Places in 1990.
The Yeoville Water Tower is located in Harley and Percy Streets, Yeoville, near the fountain of Doornfontein; it was built in 1914 by the Sivewright's Johannesburg Waterworks, Estate and Exploration company. It was constructed with a reservoir to supply piped water to Johannesburg.
Dennis T. Sullivan was the Chief of the San Francisco Fire Department in 1906. He was mortally wounded during the 1906 San Francisco earthquake, when a neighboring building collapsed onto the fire station that housed the Chief's official apartment.
A water distribution system is a part of water supply network with components that carry potable water from a centralized treatment plant or wells to consumers to satisfy residential, commercial, industrial and fire fighting requirements.
{{cite web}}
: CS1 maint: archived copy as title (link){{cite web}}
: CS1 maint: archived copy as title (link)